the mining company texas brine is working to mitigate the problem which you includes natural gas bubbling up. about 150 homes in the area have been evacuated. one resident told our ed lavandera, he thinks all the property around there will be worthless. >> reporter: are you worried about what it means long term? >> yes, yes. [ inaudible ] i'm retired, that's all i got coming in. >> reporter: while louisiana folks are dealing withes massive man made sinkholes natural sinkholes continue opening up in florida this time in ocala, north of orlando, people living around a five-acre lake say they watched it disappear in the matter of a few hours. while it seems there's been an increase in sinkholes lately in florida, experts say there's no scientific evidence to prove it. for "outfront," john zarella, cnn, miami. >> that video just absolutely incredible. >>> and now, "money and power" tonight. trading hall -- trading on the nasdaq was halted for three hours this afternoon. it was a technical glitch that they blamed, but the nasdaq is a big deal, apple, google, microsoft all trade there. the prob